feat: replace legacy Python CLI with GUI app

src/components/dialogs/DialogHeader.tsx

@@ -4,17 +4,18 @@ export interface DialogHeaderProps {
   children: ReactNode
   className?: string
   onClose?: () => void
+  hideCloseButton?: boolean;
 }
 
 /**
  * Header component for dialogs
  * Contains the title and optional close button
  */
-const DialogHeader = ({ children, className = '', onClose }: DialogHeaderProps) => {
+const DialogHeader = ({ children, className = '', onClose, hideCloseButton = false }: DialogHeaderProps) => {
   return (
     <div className={`dialog-header ${className}`}>
       {children}
-      {onClose && (
+      {onClose && !hideCloseButton && (
         <button className="dialog-close-button" onClick={onClose} aria-label="Close dialog">
           ×
         </button>

src/components/dialogs/DlcSelectionDialog.tsx

@@ -141,7 +141,7 @@ const DlcSelectionDialog = ({
 
   return (
     <Dialog visible={visible} onClose={onClose} size="large" preventBackdropClose={isLoading}>
-      <DialogHeader onClose={onClose}>
+      <DialogHeader onClose={onClose} hideCloseButton={true}>
         <h3>{dialogTitle}</h3>
         <div className="dlc-game-info">
           <span className="game-title">{gameTitle}</span>

src/components/dialogs/ProgressDialog.tsx

@@ -123,7 +123,7 @@ const ProgressDialog = ({
       size="medium"
       preventBackdropClose={!isCloseButtonEnabled}
     >
-      <DialogHeader>
+      <DialogHeader onClose={onClose} hideCloseButton={true}>
         <h3>{title}</h3>
       </DialogHeader>